A cooling tower cools water
A.Below wet bulb temperature
B.Equal to wet bulb temperature
C.Slightly above wet bulb temperature
D.Wet bulb has no bearing on cooling load performance
E.None of the above
Category: Mechanical Engineering Mcqs
In a balancing machine, the units for unbalance measurement are
A.cps
B.cm
C.gram
D.gm-cm
E.gm-cm-cps
Which of the following operation on grey cast iron will result in the production of white cast iron?
A.Tumbling
B.Tempering
C.Shot peening
D.Rapid cooling
E.Rapid heating
A mould cracks after drying. It indicates
A.excess of clay
B.lack of clay
C.coarse irregular grains
D.none of the above
Cast irons are generally specified by
A.Carbon percentage
B.Iron percentage
C.Hardness
D.Process of manufacture
E.Tensile strength
The main constituent of glass is
A.SiO2
B.B2O3
C.Al2O3
D.CaCO3
Which of the following pollutant results from decaying organic matter?
A.Acetylene
B.Ozone
C.Ammonia
D.Nitric oxide
Surveying tapes are generally made of
A.Invar
B.Nichrome
C.Muntz metal
D.Constantan
E.Nicheloy
A carnot cycle engine operating between temperature range of 50?C and 100?C will have the efficiency of nearly
A.50%
B.40%
C.26.80%
D.13.40%
Pattern maker’s contraction rules are
A.different for different materials of patterns
B.different for different materials of castings
C.same for all materials of castings
